How many chill hours does 99729 get?

99729 averages 588 chill hours per winter, ranging from 303 to 893 across the last 10 years.

What hardiness zone is 99729?

99729 is in USDA hardiness zone 4a.

Location almanac

The short answer

99729 averages 588 chill hours per winter (303–893 across 10 years) in USDA zone 4a.

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 99729’s chill hours and zone:

Chill and zone requirements are comfortably met in 99729.

Show 43 more good fit varieties

Possible in a good year or a favorable microclimate — click through for the caveats.

Show 14 more marginal varieties

How many chill hours does 99729 get?: 99729 averages 588 chill hours per winter, ranging from 303 to 893 across the last 10 years.
What hardiness zone is 99729?: 99729 is in USDA hardiness zone 4a.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026